Perforator



Nov. 8, 1932. w. P. sHoMAkER -1,887,331

PERFORATOR Filed Aug. 26, 1931 Patented Nov. 8, 1932 g I i WESLEY r;snomknn, F in'rcm ronn; "VIRGINIA "-PERTORATOR empplidationzit-le(li-A'ugnsc- 26;:1-931; '=Seria-1'No.55 9j5S2.- I

r 'Thepresentinvention relates to perforalines and-in retracted positionin dotted lines. tors, and morepa-rticularly toa perforatol V--Referring to the drawing 10 designates a fOIUSBiIliCOIlIlGCtiODwith-"envelopes,sheets cylinder-over which envelopes 11', sheets --orand other-like articles across which it'ishdeother articles tolie-perforated arepassed; the -sired toform a line of perforations. I.saine beingmovcd between. the cylinder 10 Anobject 10f thepresentrinvention iswto :and a-perforatingidisc 12. The disc 12 is'-provide a perforator withimprovedmeans provided with pointed teethyorgiven any for-temporarily'renderingthesame inoperaother suitableconstruction to formthe pertive in connection with certain envelopesforationszin theenvelopellg andithe dise 12 -01 sheetsifwh-ich pass'zthroughstheamechais mounted upon a ashaft-18 which carries (so nism:and whichmaybe operated-by striker clamping discs 14 secured to theshaftatopfingers or othertrip means-,rsuch-asa disclosed -posite sidesof the -perforating disci12' to in connection with cry-pendingvapplication 'securethe latte-r firmly totheshaft. Serial No. 557 ,1-65;filedAu-gust. 1 L, 1-931. .T-heshaftrl3 is provided ionlone end with a15 Another object of the"present-inventionis removable washer 15which issecured torthe 0-5 v toi id v u o tfor a perf ating disc, shaft by ascrew16orthelikewhiletheoppm' which normally-holds the discs-in positionsite'end of the shaftilii carries apulley 17b} for operation upon-theenvelope,-hut which means of which the (shaft: is continuously whentripped will automatically:-raiseuthe rotated, Theoppositeendsxofthegshaft 15 perforatingdisc-out=oftherline-of eon-tact are-:mounted. inbearing a'rms '18 andilthe 20 with the envelope, so that the dism-may bewasher 15 isadaptedto'iengage, against the :maintained *at: aconstant-predetermined 1 outerface of oneofrthe arms .18, so: as to holdspeed of" rotationtopreventtinjnryitoathe the shaft 13 from longitudinaldisplacement disc and envelope :when-the disc is-again refrom thea-rms."The arms .18. a e provided :5 leased-and moved into operating position,"at-OneBdgera-nd-intermdiate their n with ,It i a;further-objectiof-thei ve tio t shoulders19zandthe upper ends ofthearins provide aconstruction of-this character (18 areconnectedlto PI'iHgSQO whichextend wherein-there is a-miniinumamountof.strain pwardly from the armsand rearwardly at th ti hm h ii operaopposite SldBS ofthe brackethead=21 fornortion andalso when tripped. inally urging the arms 18 in anupward 'direc- 15o The invention also aimsitoe rovideamech- 010m a o oswing rearwardly against anism wherein the edge of the envelopenis eoppfi sldes'of the The had not-upset asit-isbrought int t t ith 21isprovidediatits'low'er end with spaced the'peiforatom the object:heingcarried out p n ng forkfarms 22 which di po w 1 b 11 ti di t t d.-t at opposite sides of the discs 12 and'l band .ti i id i i fith c f tidi wh1ch are. prov 1dedw1th longitudinal slots 23 With the foregoing andother objectsin nwhlch-ls freelyi slidable th ppo i end View theinvention. mh more. if 11 d portions ofthe shaft 13, so that the shaftwith scribed hereinafter, .-ancl -=wi11- be more 'parhe pcrforatlng lsc12 may. move lengthwise ticularly pointed out in the claims appended"wlthin the fork arms 22 toward and fromthe h t 1 cylinder 10.

Inthe drawing; wherein-like-symbols refer 118M121 s P QY a opp ite Sides-to-1ikeror corresponding :parts 1 throughout Wlth downwardly faclng ule 2 1 1 the several views, ed to receivethereagainstthe shoulders 19Figure lis. aside elevation of a 'perforator of. thehearingiarInsY18-whenthe latter are constructed-according tothe presentinvenswiung:forwardlyiagainst the tension of the itionpthetripmechanism-=being shown 'in -spri ngs 20 -for holding:theperforating.disc dotted linesyand -l2againstthe'cylinder'10. lhebrackethead "Figure 2 iswan' end-view whereof with the 21 is providedwith inclined or cam faces 25, at I e perforating discin operativeposition in full the rear ends ofvthe shoulders 24and .0ver 9 a setscrew 27 adapted to enter the socket and engage against the side ofabracket arm 28 for adjustably holding the bracket head on the arm, andthe arm is providediwith a clan1p'29 adapted toeng age a supporting"frame rod 30 for rigidly holdin the arm adjusted position thereon.

Spaced lengthwise of the supporting frame rod 30 is a socket clamp '31carrying a set "screw 32 adapted to engage against a bearing arm 33,which 1s seated 1n the socket of the clamp 31 and which is provided atits outer end with a bearing 34 adapted to retain theregular relation ina rock shaft 35, which is disposed substantially in parallel relationwith the frame rod 30; The shaft'35 carries at one side thereof a sleeve36 engaging against one side of the bearing 34 and which is" Xed indesired anupon the shaft 35 by a set i vent the perforating of desiredenvelopes or sheets 11, and for this purpose, the-mechascrew 37.

The sleeve 36 provided at one side with a radially disposed post orstud-38 to which one end of a spring 39 is secured, the other end of thespring being looped or otherwise secured upon the frame rod 30, so as toexert tension upon the sleeve 36 and the shaft 35 to turn in onedirection. 1

The rock shaft 35 is provided upon its end and at the opposite sideofpthe bearing 34 with'a crank-arm 40 to which is pivoteda V trip rod.41 which extends to a" suitablepoint of the envelope handling mechanismand which, as shown in dotted lines in Figure 1,

fmay be connected to a spring pressed lever '42 lying in the path ofa'strikerfinger43 'for'swinging the lever 42 and moving the rod 41 attimes; f

' Y The rock shaft 35 is provided upon its 0pposite end with an endsocket 44 adapted .to interfit with the non circular end of a cam shaft45, which is journaled through the rear .end portion of the bracket head21; and which practically constitutes the rear edges of the fork arms22. The'cam shaft 45 carries a pair of cams 46 which are disposedagainst the opposite outer faces of the fork arms 22 in line with thebearing arms 18, and are adapted, as shown 1n Figure 2, to engageagainst the rear edges of the arms 18 and swlng the latter forwardlyagamst the tension of the springs when the rock shaft and the cam shaft45 are turned. I

" In use','the c l amps 29 and 31 may be adj usted lengthwise ofthe's'uporting frame rod 30 to dispose the perforating'disci12 inlinewith the portions of the envelopes or sheets 11 which are to beperforated as they move over the cylinder 10; The correct adjustment ofthe disc l2'with respect to the cylinder 10 may be obtained by movingthe bracket head 21 on the bracket arm 28 and securing the parts inadjusted position by the set screw 27. The corresponding adjustment isalso made between the clamp 31 and the bearing arm 33, the latter beingmoved in the socket of the clamp 31 and fixed in adjusted posi- "thereofbeneath the shoulders 24 of the bracknism is provided with oneor morestriker fingers 43 adapted to engage the lever 42 of the machine andthus move the rod 41 of the perforator. The rod 41 swings the arm in adirection'to turn the rockshaft 35 againstthe tension of the spring 39.The

rock shaft 35'turns the cam shaft and swings the cams 46 backwardlyawayfrom the bearing arms 18. 'The springs 20 now 'draw the bearing arms 18backwa-rdlyfrom beneath the shoulders 24 of the bracket head '21 andatthe same time drawing the arms 18 upwardly to an extent sufficient toraise the perforating disc 12 out of the line of contact with theenvelopes or sheets 11. This action is permitted as the cam or inclinedfaces '25 at the-rear ends of the shoulders 24 extend upwardly andrearwardly, so that the shoulders 19 of the bearing arms may rideupwardly over the faces 25 and thus admit of the upward sliding movementof theshaft 13 in the slots 23 of the fork 22. When the disc 12 is thusretracted, it-is still maintained in estate of rotation with the speedunchanged.

Thus when the rod 41 is released, the spring 39 returns the parts tonormal position and the cams 46 force the bearing arms 18 forwardly anddownwardly to interlock the shoulders and move the perforating disc 12back into the line of operation. There will be no slipping. jarring orupsetting" of the teethwith respect to the perforatingdisc 12, and therewill thus be no mutilation of'the envelopes 11 during this returnmovemento-f the perforat ng disc. The operation is automatic and smoothwithout jar or sudden takeup of any of the parts which arev adapted lit)to rotate when operating. It is also seen that the adjustment may bequickly and easily effected as the rock shaft is detachably engaged withthe cam shaft by means of the end socket 44 of the rock shaft. Thebracket head 21 may thus be first adjusted into the proper line of feedwith respect to the en-' velopes l1, and after this ad ustment is obtained the rock shaft 35 with its connected and supporting parts maythen'be adjusted to accommodate the adjustment of the perforating disc12.

It is obvious that various changes and modifications may be madeiinthedetails of construction and design of the above specifically describedembodiment of this invention Without depart ng from the spirit thereof,such changes and modifications being restricted only by the scope of thefollowing claims:

lVhat is claimed is 1. In a perforator for envelopes and the likepassing over a cylinder, a bracket head, a shaft mounted in the outerend of the head and adapted for bodily movement therein toward and fromthe cylinder, means for continuously turning the shaft, a perforatingdisc mounted on the shaft, means for maintaining the perforating discnormally in the line of feed of the envelopes, and automatic tripactuated means operable on the shaft for shifting the same in thebracket head to at times retract the perforating disc from the cylinder.

2. In a perforator for envelopes passing over a cylinder, a perforatingdisc, shiftable supporting means for the disc, means for con, tinuouslyturning the disc, yieldable means normally urging the disc from thecylinder out of the line of operation on the envelopes, spring meansoperable on said first means for normally ma ntaining the latter inposition to project the perforating disc into the line of feed foroperation on the envelopes, and trip means operable on said last namedmeans for rendering the same inoperative to admit operat on of the firstmeans and the retraction of the perforating disc.

3. In a perforator, a perforating disc, means for continuously rotatingthe disc, means for retracting the disc out of operative pos tion,realeasable means normally acting on said retracting means to maintainthe disc in projected position for operation, and trip means operableupon said releasable means for actuating the latter to release theretracting means; whereby said disc may be retracted.

4. In a perforator, a bracket, means for supporting the bracket, a shaftmovably mounted in-the bracket into projected and 'retracted postions, aperforating disc mounted on the shaft, bearing members for said shaft,said bearing; members and said bracket having interlocking shoulders formaintaining the bearing: members;..and. the shaft; in ipro' jectedposition, springs between the bearing members and the bracket.fornormally moving thexbeari'ngl members i to disengage the shouldersand retract. the bearing members andttheishaft, a :cam shaft mounted onthe brackelg camslonthe cam shaft for engaging I .the bearing memberstolmove the same into pro ected position and interlock the shoulf ders,a rock 'shaftconnected-to the cam shaft, spring means engaging the rockshaft to urge the isame'ttoturn in-a directionto hold-thecamsagainstsaidbearing members andmaintain-the latterinpro1ectedpos1t1on, anditrlp means connected to the rock shaft for attimes tonturn' the latter against the spring'and relieve =said cams frompressure against the bearing :members; whereby the springs of thebearing members mayretractthe latter.

An envelope perforator comprising a bracket. head, means for adjustablysupporting the bracket head, said bracket head hav ing a slotted fork atits outer end and'outwardly facing shoulders with backwardly andinwardly inclined cam faces leading from the shoulders at opposite sidesof the fork, a pair I of bearing arms disposed at opposite sides of thefork, a shaft mounted in said bearing arms, a disc mounted on the shaftin the fork,

means for continuously turning the disc, cam means mounted on thebracket head for mov ing said bearing arms against said cam faces andbeneath the shoulders of the bracket head to maintain the shaft anddiscin projectedosition s rin means connected between the bearing armsand the bracket head for urg ing the spring arms inwardly and rearwardlyof the head for retracting the shaft and theperforating disc, a springoperated rock shaft connected to the cam means for normally urging thecam means against said hearing arms, and trip operated means connectedto the rock shaft formoving the same in a direction to relieve the cammeans from the bearing arms.

6. In a perforator adapted to perforate envelopes or the like passingover a cylinder, a perforating disc, supporting means for the disc,means for rotating the ;disc, locking means biased to a releasedposition for holding the disc in the line of feed of the envelopes, andtrip releasable means normally op- I 7 1y rotating the shaft and disc, apair of bearing members mounted on the shaft at oppo v I I site sides ofthe forkand having inwardly facing shoulders adapted toseat against-theshoulders of the bracket head, springs between the inner rear portion ofthe bracket head and the inner ends of said bearing arms for drawingthebearing members and the shaft backwardly to unseat the shoulders of jY i the bearing member and retract the perforating disc,'a'cam shaftmounted in the lower rear portion of the bracket head, cams on thecamshaft disposed in line with the rear edges of the bearing members andtrip released means connected to the cam shaft for normally urging thecams against said bearing members to advance the shoulders thereof oversaid cam faces and beneath the shoulders. of the bracket head.

In testimony whereof I affix mysignature. i

WESLEY P. SHOMAKER.

